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perfect copy, im very satisfied, i was need the diagram over the powersupply and
the copy was very sharp
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This is exactly the service manual I needed.
Complete with all schematics, partslists, PCB layouts and alignment instructions.
This manual covers both the T-4970 en T-488F Onkyo tuner.
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IF PRINTED CIRQUIT BOARD WIRING VIEW WAS ONE TONE LIGHTER, THEN 5 STAR RANK HAS TO BE MY CHOISE.
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Very usefull, good quality drawings !
Muito útil encontrei todas as informações necessárias.
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Wanting to repair a neighbours tape recorder I needed the necessary information, it makes it easier. Although the service manual is described as "Language : English" To my dismay I found that it is entirely written in German, a language I do not understand. At least I now have the schematics which will help of sorts. I may not use this service again due to the laguage difficulty after all when it states English you do not expect it to be entirely in another language.
Sect. I1 Page 4
Model 130B
H O R I Z O N T A L B A L A N C E ADJUSTMENT
RO
JUMPER
After warm-up:
1. Short together the horizontal INPUT terminals.
5. Set HORIZ. SENSITIVITY to VOLT/CM.
1 MILLI-
2. Set AC-DC switch to DC. 3. Set HORIZ. SENSITIVITY to CAL. VERNIER to CAL.
Turn
6 . Return the spot to the major vertical axis with the coarse (screwdriver) HORIZ. DC BAL. control or with the fine (knob) control if the unbalance is slight.
7. Repeat steps 2, 3 4, and 5 if necessary.
NOTE: A separate adjustment (Bal. Adj. on the etched board) is provided to balance the VERNIER.
4. Adjust the HORIZ. POS. control to place the
left edge of the calibrating signal trace on the major vertical axis.
Figure 2-3
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